Final answer:
Divide the total weight of 198.8 grams by the weight of one jelly bean, 0.7 grams, to find that 198.8 grams is equivalent to 284 jelly beans.
Step-by-step explanation:
To determine how many jelly beans weigh 198.8 grams, we need to use the given weight of one jelly bean and set up a division problem. One jelly bean weighs 0.7 grams. To find the total number of jelly beans that weigh 198.8 grams, we divide the total weight by the weight of one jelly bean:
Total number of jelly beans = Total weight / Weight of one jelly bean = 198.8 grams / 0.7 grams per jelly bean.
We then calculate the result:
198.8 ÷ 0.7 = 284
Therefore, the answer is (a) 284 jelly beans.